EduSahara™ Worksheet

EduSahara™ Worksheet

Name : Chapter Based Worksheet

Chapter : Factors and Multiples

Grade : ICSE Grade VIII

License : Non Commercial Use

Question 1

1.

Find the number of prime factors of
54

(i)

2
(ii)

0
(iii)

4
(iv)

3
(v)

1

Question 2

2.

Find the LCM of
{4,12}

(i)

11
(ii)

13
(iii)

12
(iv)

9
(v)

15

Question 3

3.

Find the product of LCM and HCF of
{9,8}

(i)

72
(ii)

73
(iii)

71
(iv)

74
(v)

69

Question 4

4.

Which of the following numbers is divisible by 10?

(i)

4792
(ii)

4789
(iii)

4791
(iv)

4788
(v)

4790

Question 5

5.

Find the number of prime factors of
22

(i)

4
(ii)

3
(iii)

1
(iv)

0
(v)

2

Question 6

6.

The multiples of 7 =

(i)

{7,14,21,28,35,42}
(ii)

{7,14,21,28,42,15}
(iii)

{7,14,21,28,35,42,6,20}
(iv)

{7,14,35,42,36,15}
(v)

{7,14,21,28,35,42,20}

Question 7

7.

Find the smallest perfect square which is divisible by each of the numbers 15,8,18

(i)

7200
(ii)

3600
(iii)

3602
(iv)

2881
(v)

5400

Question 8

8.

The multiples of 19 =

(i)

{19,38,57,76,95,56}
(ii)

{19,38,57,76,95,114,75,56}
(iii)

{19,38,57,95,94,56}
(iv)

{19,38,57,76,95,114}
(v)

{19,38,57,76,95,114,37}

Question 9

9.

Find the LCM of
{128,16,32}

(i)

130
(ii)

129
(iii)

128
(iv)

127
(v)

125

Question 10

10.

Find the LCM of
{520,680,640,80}

(i)

141442
(ii)

141439
(iii)

141441
(iv)

141438
(v)

141440

Question 11

11.

Find all common factors of 21 , 32 and 24

(i)

{1}
(ii)

{21}
(iii)

{16}
(iv)

{1,21}
(v)

{1,32}

Question 12

12.

Find the LCM of
{4,15,12}

(i)

59
(ii)

61
(iii)

62
(iv)

60
(v)

58

Question 13

13.

The factors of 76 =

(i)

{1,2,4,19,38,76,20}
(ii)

{1,19,38,76,75,20}
(iii)

{1,2,4,19,38,76,37,75}
(iv)

{1,2,4,19,38,76}
(v)

{1,2,19,38,76,37}

Question 14

14.

Find the H.C.F of
4
18

,

9
6

(i)

1
18
(ii)

(
-1
18
)
(iii)

1
6
(iv)

1
16
(v)

1
20

Question 15

15.

The common multiples of 4 , 8 and 9 =

(i)

{72,144}
(ii)

{72,231}
(iii)

{72,281}
(iv)

{72,45}
(v)

{72,43}

Question 16

16.

Find the LCM of
{15,10,9,8}

(i)

357
(ii)

359
(iii)

360
(iv)

361
(v)

362

Question 17

17.

Find the H.C.F of
18
4

,

15
18

,

4
14

(i)

1
252
(ii)

1
84
(iii)

1
254
(iv)

1
250
(v)

(
-1
252
)

Question 18

18.

Which of the following numbers is divisible by 6?

(i)

3270
(ii)

3271
(iii)

3268
(iv)

3272
(v)

3269

Question 19

19.

The factors of 30 =

(i)

{1,2,3,5,6,10,15,30}
(ii)

{1,2,3,5,6,10,15,30,29,16}
(iii)

{1,2,3,5,10,30,7,4}
(iv)

{1,2,3,5,6,10,15,30,7}
(v)

{1,2,5,6,10,15,30,4}

Question 20

20.

Find the HCF of
{372,540,576,144}

(i)

10
(ii)

11
(iii)

12
(iv)

14
(v)

13

Question 21

21.

Find the number of prime factors of
1680

(i)

4
(ii)

5
(iii)

3
(iv)

1
(v)

7

Question 22

22.

Find all common factors of 33 and 37

(i)

{1,33}
(ii)

{37}
(iii)

{3}
(iv)

{1}
(v)

{1,37}

Question 23

23.

Find the LCM of
{8,9}

(i)

71
(ii)

70
(iii)

75
(iv)

73
(v)

72

Question 24

24.

Find the prime factorization of
45

(i)

3 2

✕

5
(ii)

3 2

✕

4
(iii)

1

✕

5
(iv)

3 3

✕

5
(v)

3 2

✕

8

Question 25

25.

Which of the following numbers is divisible by 9?

(i)

4394
(ii)

4392
(iii)

4391
(iv)

4390
(v)

4393

Assignment Key